CIRCUIT ARRANGEMENT FOR MATCHED INTERCONNECTION OF AN AMPLIFIER WITH INDUCTANCE IN EMITTER CIRCUIT AND A FILTER WITH SERIES INPUT INDUCTANCE

摘要

1. Circuit arrangement for adapting an amplifier (E) with an inductance (Le ) adjustable for the purpose of level control in the emitter circuit to a filter (Sz) with an input inductance (L1 ), particularly for transmission transfer devices, the input of the circuit arrangement being formed of the base of the transistor (T) of the amplifier and ground and the output being formed of the active point of the output of the filter (Sz) and ground, characterised in that the circuit arrangement is developed as a simple quatripole network in that the collector of the transistor (T) of the amplifier (E) is connected to the part (Sz0 ) of the filter (Sz) remaining without input inductance via a resistor (R1 ) terminating the input of the filter (Sz), and that the input inductance (L1 ) is provided between ground and the common point of the collector of the transistor (T) of the amplifier (E) and of the resistor (R1 ) terminating the input of the filter (Sz).